Communication control device and communication control method

Abstract

To improve frequency utilization efficiency in communications using beamforming. [Solution] The communication control device of the present disclosure comprises a processing unit that calculates the interference power to a protected object for each beam that each communication device can transmit, and based on an interference margin representing the cumulative allowable interference power of the protected object, reduces or increases the transmission power of the beam for each beam that each of the multiple communication devices can transmit, so that the interference power is less than or equal to the allowable interference power allocated to each of the multiple communication devices.

Claims

1. In a plurality of communication devices capable of transmitting at least one beam, including a communication device capable of transmitting multiple beams, the interference power that each communication device transmits to the protected object is calculated for each beam it can transmit. A processing unit that, based on the interference margin representing the cumulative allowable interference power of the protected object, performs a process to reduce or increase the transmission power of each beam that can be transmitted by each of the plurality of communication devices so that the interference power is less than or equal to the allowable interference power allocated to each of the plurality of communication devices, A communication control device equipped with the following features.

2. The processing unit calculates the allowable interference power to be allocated to each of the plurality of communication devices based on the interference margin of the protected object, Among the plurality of communication devices, the transmission power of the beam of the first communication device whose beam interference power exceeds the allowable interference power is reduced. The communication control device according to claim 1.

3. The processing unit calculates the remaining interference margin by subtracting the allowable interference power of a second communication device among the plurality of communication devices, whose beam interference power is less than or equal to the allowable interference power, from the interference margin of the protected device. Based on the residual interference margin, the allowable interference power that can be allocated to the first communication device is calculated. The communication control device according to claim 2.

4. The processing unit calculates the allowable interference power that can be allocated to the first communication device by dividing the remaining interference margin by the number of the first communication devices. The communication control device according to claim 3.

5. The processing unit reduces the transmission power of the beam with the largest interference power among the multiple beams of the first communication device. The communication control device according to claim 2.

6. The processing unit reduces the transmission power by the first power. The communication control device according to claim 5.

7. The processing unit selects a beam from among the multiple beams of the first communication device whose interference power difference from the beam with the largest interference power is smaller than the second power, and reduces the transmission power of the selected beam. The communication control device according to claim 5.

8. The processing unit reduces the transmission power of the selected beam by the third power. The communication control device according to claim 7.

9. The interference power after reducing the transmission power of the selected beam by the third power is the same as the interference power of the beam with the largest interference power after reducing its transmission power. The communication control device according to claim 8.

10. The processing unit reduces the transmission power of all beams among the multiple beams of the first communication device whose interference power exceeds the allowable interference power. The communication control device according to claim 2.

11. The processing unit reduces the transmission power of all beams whose interference power exceeds the allowable interference power by a fourth power. The communication control device according to claim 10.

12. The processing unit reduces or increases the transmission power for each beam for all of the multiple protected objects to a value such that the cumulative interference power is less than or equal to the interference margin for each protected object. The communication control device according to claim 1.

13. If the interference power from the beam of the first communication device after reducing the transmission power exceeds the calculated allowable interference power, the processing unit further reduces the transmission power of the beam of the first communication device. The processing unit repeatedly calculates the remaining interference margin and reduces the transmission power of the beams of the first communication device until the interference power of all of the beams of the first communication device is less than or equal to the allowable interference power. The communication control device according to claim 3.

14. A transmitting unit that transmits information indicating the determined transmission power for each beam to the communication device. A communication control device according to claim 1, comprising:

15. The processing unit identifies the beam that the communication device can transmit based on information about the communication device. The communication control device according to claim 1.

16. The processing unit identifies the beam that the communication device can transmit by sampling within the beam's movable range of the communication device. The communication control device according to claim 15.

17. The processing unit calculates the interference power applied to the protected object by the simultaneous transmission of two or more beams if the communication device is capable of transmitting two or more beams simultaneously. The communication control device according to claim 1.

18. The first communication device is a communication device in which the average value of the interference power from a plurality of beams of the communication device exceeds the allowable interference power. The communication control device according to claim 2.

19. A step of calculating the interference power to the protected object for each beam that each communication device can transmit, in a plurality of communication devices capable of transmitting at least one beam, including a communication device capable of transmitting multiple beams, The steps include: reducing or increasing the transmission power of a beam for each of the plurality of communication devices, based on the interference margin representing the cumulative allowable interference power of the protected object, so that the interference power is less than or equal to the allowable interference power allocated to each of the plurality of communication devices; A communication control method equipped with [a specific feature].

20. In a plurality of communication devices capable of transmitting at least one beam, including a communication device capable of transmitting multiple beams, the interference power to the protected object is calculated for each beam that each communication device can transmit. Based on the interference margin representing the cumulative allowable interference power of the protected object, a processing unit determines the transmission power of each beam that can be transmitted by each of the plurality of communication devices, such that the interference power is less than or equal to the allowable interference power allocated to each of the plurality of communication devices. A transmitting unit that transmits information indicating the transmission power for each determined beam to the communication device, A communication control device equipped with the following features.

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